Hole dynamics in spin and orbital ordered vanadium perovskites
Strongly Correlated Electrons
2009-11-10 v1 Materials Science
Abstract
Hole dynamics in spin and orbital ordered vanadates with perovskite structure is investigated. A mobile hole coupled to the spin excitation (magnon) in the spin G-type and orbital C-type (SG/OC) ordered phase, and that to the orbital excitation (orbiton) in the spin C-type and orbital G-type (SC/OG) one are formulated on an equal footing. The observed fragile character of the (SG/OC) order is attributed to the orbiton softening caused by a reduction of the taggered magnetic order parameter. It is proposed that the qualitatively different hole dynamics in the two spin-orbital ordered phases in vanadates can be probed by the optical spectra.
Cite
@article{arxiv.cond-mat/0408395,
title = {Hole dynamics in spin and orbital ordered vanadium perovskites},
author = {Sumio Ishihara},
journal= {arXiv preprint arXiv:cond-mat/0408395},
year = {2009}
}
Comments
4pages, 4figures